Scaffold horse



M. PRAEGER sCAFFoLD HORSE Sept.` 2 7, 1938.

Filed Dec. l5, 195'? 1N VENTOR. es@

77761 ville @ra BY Z Patented Sept. 27, 1938 UNITED STATES PATENT*Melville Praeger, New YorkN. n

- Application December 15, 1937, seria1'Na.-179,'s4s

4 Claims. (C1. 304-5) This invention relates to scaffolding and moreparticularly relates to improvements in horses for scaffolding. Y

Among the objects of the present invention are to provide a novelscaffold horse which is adjustable for different positions in use; whichis cheap, and simple to construct and o-perate; and which is rugged andserviceable.

These and further objects of the invention will become evident in thefollowing description of a preferred embodiment as taken in connectionwith the drawing thereof, in which:

Figure 1 is an end view of two of the horses in position withscaffolding on the upper section.

Figure 2 is a view of the lower supporting section.

Figure 3 is a side View of the novel scaffolding.

Figure 4 is a cross-sectional view taken along 4-4 of Figure 3,centrally through the horse; and

Figure 5 is a cross-sectional view taken along 5-5 of Figure 3.

In Figure 1, two horses, I0, III are placed side by side withscaffolding II adjusted transversely of the beams I2, I2 supported inthe horses I0. The beams or boards I2 are inserted in respectivebrackets I3 secured to vertical angle irons I4 adjustably attached tothe horses I0 in a manner to be hereinafter described in more detail.

The horses ID are essentially composed of angle' irons or bars rivetedor otherwise combined into a structural unit. The transverse base barsI5 are maintained by truss rods I6 which span the ends of bars I5 and anintermediate portion of the vertical or standard angle iron I1. Thebottom of vertical bar I1 is fastened centrally of the transverse basebar I5. v

Each horse I0 comprises two opposite base and standard bar combinationsI5 to I1, as is evident from an inspection of the side View, Figure 3. Aseries of parallel cross-bars I8, I9y and 20 connect the end sections ofthe horse. Rivets are practical joining elements for the bars, althoughwelding or other means are possible. I'he bars of the horse arepreferably angle irons to impart ruggedness and strength to the unit. i

A vertical supporting rod I4 is adjustably mounted centrally of thecross-bars I8, I9 and 20 by bolts having wing-nuts 2l. A series: ofholes 22 are formed along bar I4 for permitting variable positioning ofthe bar with respect to the bolts 2I. The bolts 2| are each passedthrough corresponding holes in the middle of cross-bars I8,

I9 and 20. The top of bar I4 contains the bracket A It is now evidenthow the height of beam I2 is controlled by adjusting the position of barI4 in Y the cross-bars of the horse, I0. Figure 4 is a vertwo bars 24 ofa single horse at the respective brackets 23. Brackets 23 comprise anopen top formed by a bar 26 spacedly mounted from bar 24, as shown inFigures 2 and 5, by block 21.

The bars 24 contain a plurality of spaced holes,

which coact with `the bolts 28 having wing-nuts for manual control. Bothbars 24 are adjusted to the same height, and together carry thecrossbeam 25 for the horse. Strips 29, secured between the lowercross-bars I9`and 20, carry the bolts 28 and support the vertical bars24.

The sets of cross-beams I2 and` 25 accordingly may be variablypositioned in the scaifold horses of the invention, in a ready andsimple manner. Modifications are possible in the construction of thehorse which fall within the broader spirit and scope of the invention,as defined in the following claims.

I claim:

1. A scaffold horse comprising end supports, cross-bars carried betweensaid supports, one above another, a bar having a plurality of holes,means on said cross-bars for coacting with the holes of said bar,whereby said bar is variably positionable on said horse in a verticalposition, and a bracket secured at the top of said bar for carrying across-beam of the scaffold, further bars, arranged on opposite sides ofsaid first mentioned bar for vertical movement and adjustably secured tosaid cross-bars for carrying a second cross-beam for the scaffold.

2. A scaffold horse comprising end supports, cross-bars carried betweensaid supports, one above another, a bar having a plurality of holes,means on said cross-bars for coacting with the holes'of said bar,whereby saidbar is variably positionable on said' horse in a verticalposition, and a bracket secured at the top of said bar for `carryingacross-beam of the scaifold, further bars, arranged on opposite sides ofsaid first mentioned bar, secured to said cross-bars for carryand abracket secured at the top of said bar for.

carrying a cross-beaml of the scaffold, further bars, arranged onopposite sides of said iirst mentioned bar, secured to said cross-barsfor carrying a second cross-beam for the scaiold, said further barshaving a plurality of holes, a strip for each further bar, securedbetween said cross-bars, bolts having wing-nuts carried by said stripsfor variably supporting said further bars on the horse.

4. A scaffold horse comprising end supports, cross-bars carried betweensaid supports, one above another, a bar having a plurality of holes,means on said cross-bars for coacting with the holes of said bar,whereby said bar is variably positionable on said horse in a verticalposition, and a bracket secured at the top of said bar fo-r carrying across-beam of the scaffold, further bars, arranged on opposite sides ofthe first mentioned bar, secured to said .cross-bars for carrying asecond cross-beam for the scaiold, said further bars having apluralityof holes, a strip for each further bar, secured between saidcross-bars, bolts having wing-nuts carried by said strips for variablysupporting said further bars on the horse, abracket carried at the topend of each further bar for supporting said second cross-beam.

. f MELVILLE PRAEGER.

